ASTROSAT CZTI

Data Quality Report

Orbit 48597

Creation date: 2024-09-22T16:49:11.124214
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_037T01_9000006436_48597cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48597cztM0_level2_quad_clean.evt
Size (bytes)568,284,480136,883,520
Size542.0 MB 130.5 MB
Events in quadrant A8,481,717896,511
Events in quadrant B4,103,381935,770
Events in quadrant C3,699,869895,221
Events in quadrant D4,067,314805,305

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320060
B0183860
C0178780
D0189490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88151231.395349%
B8815390.442428%
C881550.056721%
D8816921.043557%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8815 8815 2 2 0.02% 0.02%
B 8815 8815 3 3 0.03% 0.03%
C 8815 8815 1 1 0.01% 0.01%
D 8816 8816 61 61 0.69% 0.69%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 4781899 23745.75 952 929 201.3
A 13 254 17326 81.44 952 929 201.3
A 13 248 12245 56.2 952 929 201.3
B 12 16 229704 1208.28 954 921 189.3
B 0 197 57962 301.25 954 921 189.3
B 12 111 25105 127.72 954 921 189.3
C 12 250 20636 89.31 936 939 220.5
C 12 249 18420 79.26 936 939 220.5
C 14 67 7469 29.61 936 939 220.5
D 13 171 215141 923.16 925 893 232.1
D 2 249 198813 852.81 925 893 232.1
D 5 171 83850 357.45 925 893 232.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter